The Pontchartrain Conservancy's second annual DIVE INTO DISCOVERY ROV EXPO spans five days, offering a family-friendly mashup of science and exploration. Activities include coral making, remotely operated vehicle (ROV) piloting and basic circuitry. The event is from noon to 4 p.m. Tuesday through July 12 at the New Canal Lighthouse, 8001 Lakeshore Drive. Cost is $15 and includes admission to the museum.